<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(t => {
  let start_index = navigation.currentEntry.index;

  const currentBefore = navigation.currentEntry;

  let disposeCalled = false;
  navigation.currentEntry.ondispose = t.step_func(e => {
    disposeCalled = true;

    assert_equals(e.constructor, Event);
    assert_equals(e.bubbles, false);
    assert_equals(e.cancelable, false);
    assert_equals(e.composed, false);

    assert_not_equals(navigation.currentEntry, currentBefore);
    assert_array_equals(navigation.entries().slice(start_index), [navigation.currentEntry]);
    assert_equals((new URL(navigation.currentEntry.url)).search, "?replacement");
    assert_equals(navigation.transition, null);
    assert_equals(location.search, "?replacement");
  });

  history.replaceState(null, "", "?replacement");
  assert_true(disposeCalled);
}, "dispose events when doing a same-document replace using history.replaceState()");
</script>
